问题
多项选择题
下列关于公共建筑热水采暖系统散热器设计选型、安装的表述，哪些是正确的
A．确定散热器所需散热量时，应扣除室内明装管道的散热量
B．散热器宜明装
C．散热器的外表面应刷非金属性涂料
D．钢制柱形散热器的片数不应超过20片
答案
参考答案：A,B,C
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下列关于公共建筑热水采暖系统散热器设计选型、安装的表述，哪些是正确的
A．确定散热器所需散热量时，应扣除室内明装管道的散热量
B．散热器宜明装
C．散热器的外表面应刷非金属性涂料
D．钢制柱形散热器的片数不应超过20片
参考答案：A,B,C
| Lichens may grow on the bark of a tree in a steaming tropical rain forest, on the bricks of big city buildings, on rocks in hot springs, on wind-swept mountaintops, and in the driest desserts. In the arctic, they provide the principal food for caribou, and they are one of the few plants that grow in Antarctica. They are pioneers, appearing in barren rocky areas and starting the formation of soil in which mosses, then ferns, and then other plants can take root. Lichens are a partnership of two plants — fungi and algae. The lichen body is made up of a network of fungal strands. In the upper layers of these grow groups of algae. The two organisms live together to the benefit of both, a relationship known as symbiosis. The fungi provide support, absorb water, and shelter the tender algae from direct sunlight. The algae carry on photosynthesis and provide the fungi with food. The algae can live independently and are recognizable as a species that grows alone. The fungi, on the other hand, cannot live apart from their partners. They can be placed in known classes of fungi but are unlike any species that lives independently. So definite are the form, color, and characteristics of these double organisms that for hundreds of years, they were classified as one. More than 15,000 "species" were named. If these organisms are classified as separate species, it is difficult to fit them into the existing system of classification. But if they are classified separately, these species of fungi seem rather strange. Lichens are a splendid example of the difficulties faced by taxonomists in classifying species. |
The word "splendid" underlined in Paragraph 3 most probably means ______ .
A．unique
B．improbable
C．excellent
D．famous